Originally Posted by Opalia24

I use 4000 coins at upgrade cost which is girl level 58.

Since when?...

->Open Spoiler<-

It's already higher than 4k at level 46 and still corresponds to what i said about your girl's level times 100.

Originally Posted by Opalia24

I am free player so I don't think I really have to worry about getting girls to level higher the 70 anytime soon.

Each event gives a 5* unit and they all go to level 70 when evolved.

Edit:
I went and checked, and it actually is cheaper for unevolved girls with my unevolved 42 girl being at 3k per fodder. However as you can see it is more expensive when evolved. So i can agree with, and have said so earlier in the thread, that 2-1 is much better before evolving at hitting level 40ish, but after that it is going to be incredibly expensive AND exp using.

Edit2:
And then people wonder what the lovely part of 12-3 is...
http://i.imgur.com/agdm4dN.png
http://i.imgur.com/jZqO1UH.png